WeChat's official public account "WeChat Pai" published an article explaining the origin of the Nudge feature: it was inspired by the way ants touch antennae to transmit information, aiming to provide users with a more relaxed way to say hello compared to text or voice messages. This feature is designed to fit real-life interaction scenarios such as tapping someone on the shoulder or touching their arm—gestures that require no words. If the recipient is on the chat interface, their phone will vibrate slightly as a prompt; if they are not on the chat interface, no notification will be pushed, no unread red dot will appear, and only a record will be left in the chat box. This makes it convenient for users to test the waters without needing an opening line, while the person nudged can also nudge back and leave it at that, avoiding the need to force a conversation topic. The feature was initially just a simple action, and later spawned various custom suffix playing methods. It is also not easy to trigger accidentally—it can only be triggered by double-tapping the avatar on the chat page on mobile or right-clicking the avatar and selecting Nudge on PC, and accidental triggers can be withdrawn within two minutes.